Alex Woo "Sweni" Sterling Silver Horn Bangle Inspired by the grand splendor of the African landscape, Alex Woo's "Sweni" bangle boasts the designer's signature beveled edges and a supple, twisting silhouette. Crafted in .925 sterling silver With sterling silver, remember that tarnish is a natural process caused by oxidation, but jewelry can be brought back ot life with a non-abrasive silver polish or dip.